CN112360818A

CN112360818A - Conveying pump cooling structure and cooling method

Info

Publication number: CN112360818A
Application number: CN202011159765.1A
Authority: CN
Inventors: 张福长; 张源; 张渠; 张慕妍
Original assignee: Zhouning County Shanchangxiang Agricultural Machinery Development Co ltd
Current assignee: Zhouning County Shanchangxiang Agricultural Machinery Development Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-12

Abstract

The invention relates to a cooling structure and a cooling method of a delivery pump, which comprises a pump body arranged in a vacuum cavity and a rotating shaft arranged in the pump body, wherein the upper end of the rotating shaft is not pulled out, the pump body is provided with a water outlet and a water inlet communicated with the vacuum cavity, a cooling channel is arranged on the pump body along the radial direction above the water inlet, a channel for installing the rotating shaft is arranged on the pump body, the cooling channel is communicated with the channel, a bearing assembly, a framework oil seal and a mechanical seal are sequentially arranged in the cooling channel from top to bottom, the lower end of the channel is communicated with the water outlet, the channel is isolated from the water outlet by the mechanical seal, the cooling channel is isolated from the upper part of the channel by the framework oil seal, a plurality of diversion grooves are uniformly distributed on the circumference of the peripheral side of the rotating shaft, the diversion grooves are positioned between, the main parts of the pump body driving structure are not influenced and damaged by temperature rise.

Description

Conveying pump cooling structure and cooling method

Technical Field

The invention relates to a conveying pump cooling structure and a cooling method.

Background

The rotating shaft in the existing delivery pump is sealed by adopting a filler, so that the problem of high power consumption exists, when high-temperature liquid is delivered, axial temperature rise influences the loss of bearing lubricating liquid and increases power temperature rise, the driving structure of the delivery pump is easily influenced by temperature rise and even damaged, and the energy efficiency is low.

Disclosure of Invention

Aiming at the defects, the invention provides a conveying pump cooling structure and a cooling method.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a delivery pump cooling structure, is including installing the pump body in the vacuum chamber, vertical pivot of installing in the pump body, and pivot and pump body coaxial axis, the pivot upper end is by no means stretched out, be provided with delivery port and the water inlet that is linked together with the vacuum chamber on the pump body, radially be provided with cooling channel in the water inlet top on the pump body, be provided with the passageway of installation pivot on the pump body, cooling channel is linked together with the passageway, has set gradually the bearing assembly that is used for articulated pivot, the skeleton oil blanket to bearing assembly oil blanket from top to bottom in the cooling channel, prevents that water from getting into the mechanical seal of bearing assembly, passageway lower extreme intercommunication delivery port, and mechanical seal keeps apart passageway and delivery port, and the skeleton oil blanket keeps apart cooling channel and passageway upper portion, a plurality of guiding gutters of circumference equipartit.

Further, the bearing assembly comprises a cylindrical thrust roller bearing, a bearing spacer bush and a deep groove ball bearing which are sequentially arranged from top to bottom.

Furthermore, joints are installed at the input end and the output end of the cooling channel.

Further, a motor is installed above the pump body, and an output shaft of the motor is connected with the upper end of the rotating shaft through a coupler for transmission.

Furthermore, the upper end of the rotating shaft is a spline part, and the upper end of the rotating shaft is connected with an output shaft of the motor through a spline coupler.

Furthermore, the depth of the diversion trench gradually increases from one end of the trench bottom to the other end of the trench bottom.

Furthermore, the lower side of the end of the input side communicating channel of the cooling channel is an inclined plane with a high inside and a low outside, and the left side and the right side are cambered surfaces bending towards the middle of the cooling channel.

Furthermore, the output end of the water outlet and the input end of the water inlet are coaxial.

Further, the cooling channel is perpendicular to the rotating shaft.

A cooling method comprises the following steps: the cooling channel is connected with the barrel body filled with cooling liquid through the pipeline, the cooling channel and the pipeline connected with the barrel body are filled with the cooling liquid, the mechanical seal of the rotating shaft is surrounded by the cooling liquid, the rotating shaft rotates, and the cooling liquid in the cooling channel is driven by the action of the guide groove to flow to the output end through the input end of the cooling channel and take away heat.

Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design sets up cooling channel on the pump body and cools down, and the pivot is rotated and is driven the coolant liquid through the guiding gutter and circulate in cooling channel, guarantees that the main part of pump body drive structure does not receive the temperature rise to influence and damage.

Drawings

The invention is further described with reference to the following figures.

FIG. 1 is a schematic diagram of the structure of cooling passages on a pump body;

FIG. 2 is a schematic view of the structure of the water inlet and outlet passages in the pump body;

FIG. 3 is a top view of the structure of the cooling channel.

In the figure: 1-a pump body; 2-a rotating shaft; 3-a channel; 4-a cooling channel; 5-a linker; 6-thrust cylindrical roller bearing; 7-bearing spacer bush; 8-deep groove ball bearing; 9-framework oil seal; 10-mechanical sealing; 11-a water inlet; 12-water outlet.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1 to 3, a cooling structure of a transfer pump includes a pump body 1 installed in a vacuum chamber, a rotary shaft 2 vertically installed in the pump body, the rotary shaft being coaxial with the pump body, an upper end of the rotary shaft being protruded, the pump body is provided with a water outlet 12 and a water inlet 11 communicated with the vacuum cavity, the pump body is provided with a cooling channel 4 above the water inlet along the radial direction, the pump body is provided with a channel 3 for installing a rotating shaft, the cooling channel is communicated with the channel, the cooling channel is internally provided with a bearing assembly for hinging the rotating shaft, a framework oil seal 9 for sealing an oil seal of a contra-rotating bearing assembly and a mechanical seal 10 for preventing water from entering the bearing assembly from top to bottom in sequence, the lower end of the channel is communicated with the water outlet, the channel is isolated from the water outlet by the mechanical seal, the, a plurality of diversion trenches are uniformly distributed on the circumference of the periphery of the rotating shaft and are positioned between the mechanical seal and the framework oil seal; the pivot rotates and passes through the guiding gutter and drive the coolant liquid and circulate in cooling channel, guarantees that the main part of pump body drive structure does not receive the temperature rise to influence and damage, simultaneously, after mechanical seal damaged, the hydroenergy that gets into along the pivot is discharged from cooling channel, has avoided the possibility that the bearing assembly is stained with water.

In this embodiment, the bearing assembly includes a cylindrical roller thrust bearing 6, a bearing spacer 7, and a deep groove ball bearing 8, which are arranged in this order from top to bottom.

In this embodiment, the input end and the output end of the cooling channel are both provided with connectors 5.

In this embodiment, the motor is installed to pump body top, and the transmission is connected through shaft coupling and pivot upper end to the output shaft of motor.

In this embodiment, the upper end of the rotating shaft is a spline portion, and the upper end of the rotating shaft is connected with an output shaft of the motor through a spline coupler.

In this embodiment, the depth of the diversion trench gradually increases from one end of the trench bottom to the other end of the trench bottom.

In this embodiment, the lower side of the end of the input side communication channel of the cooling channel is an inclined plane with a high inside and a low outside, and the left side and the right side are cambered surfaces bending towards the middle of the cooling channel.

In this embodiment, the output end of the water outlet and the input end of the water inlet are coaxial.

In this embodiment, the cooling channel is perpendicular to the axis of rotation, and preferably, the cooling channel is perpendicular to the axis of the inlet end of the water inlet.

If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A delivery pump cooling structure characterized in that: including installing the pump body in the vacuum chamber, vertical pivot of installing in the pump body, pivot and the pump body coaxial axis, the pivot upper end is stretched out by no pumping, be provided with the water inlet that delivery port and vacuum chamber are linked together on the pump body, along radially being provided with cooling channel in the water inlet top on the pump body, be provided with the passageway of installation pivot on the pump body, cooling channel is linked together with the passageway, from top to bottom sets gradually the bearing assembly that is used for articulated pivot, the skeleton oil blanket to the bearing assembly oil blanket in the cooling channel, prevents that water from getting into the mechanical seal of bearing assembly, passageway lower extreme intercommunication delivery port, mechanical seal keeps apart passageway and delivery port, and the skeleton oil blanket keeps apart cooling channel and passageway upper portion, a plurality of guiding gutters of circumference equipartition of pivot week, the.

2. The feed pump cooling structure according to claim 1, wherein: the bearing assembly comprises a cylindrical thrust roller bearing, a bearing spacer bush and a deep groove ball bearing which are sequentially arranged from top to bottom.

3. The feed pump cooling structure according to claim 1, wherein: and the input end and the output end of the cooling channel are both provided with a joint.

4. The feed pump cooling structure according to claim 1, wherein: the motor is installed to pump body top, and the output shaft of motor is connected the transmission through shaft coupling and pivot upper end.

5. The feed pump cooling structure according to claim 1, wherein: the upper end of the rotating shaft is a spline part, and the upper end of the rotating shaft is connected with an output shaft of the motor through a spline coupler.

6. The feed pump cooling structure according to claim 1, wherein: the depth of the diversion trench gradually increases from one end of the trench bottom to the other end of the trench bottom.

7. The feed pump cooling structure according to claim 1, wherein: the lower side of the end of the input side communicating channel of the cooling channel is an inclined plane with a high inside and a low outside, and the left side and the right side are cambered surfaces bending towards the middle of the cooling channel.

8. The feed pump cooling structure according to claim 1, wherein: the output end of the water outlet and the input end of the water inlet are coaxial.

9. The feed pump cooling structure according to claim 8, wherein: the cooling channel is perpendicular to the rotating shaft.

10. A cooling method using the transfer pump cooling structure according to claim 1, characterized in that: the cooling channel is connected with the barrel body filled with cooling liquid through the pipeline, the cooling channel and the pipeline connected with the barrel body are filled with the cooling liquid, the mechanical seal of the rotating shaft is surrounded by the cooling liquid, the rotating shaft rotates, and the cooling liquid in the cooling channel is driven by the action of the guide groove to flow to the output end through the input end of the cooling channel and take away heat.